Unknown CD-ROM errors

Dimitri Yioulos dyioulos at firstbhph.com
Fri Sep 12 14:48:44 CDT 2008


On Friday 12 September 2008 3:16 pm, Faris Raouf wrote:
> On Friday 12 September 2008 11:15 am, Shyam_Iyer at dell.com wrote:
> > Dimitri wrote:
> > > Shyam wrote:
> > > > I would suspect hal to be doing that though I am not sure since you
> > > > are using CentOS 3.
> > > >
> > > > If stopping the hal service to go away can you check if CentOS3
> >
> > allows
> >
> > > > for this. (Don't have a setup to try this out)
> > > >
> > > > Check if you have some files under /usr/share/hal/fdi/policy/ that
> >
> > do
> >
> > > > a test on media check.
> > > >
> > > > Typicall the file would be a *.fdi file and would contain a key with
> > > > some string like this -
> > > >
> > > > "storage.media_check_enabled". If you make this check "false" then
> >
> > hal
> >
> > > > would stop check for this.
> > > >
> > > > Thanks,
> > > >
> > > > Shyam Iyer
> > > >
> > > > Linux Engineering
> > >
> > > Shyam,
> > >
> > > I really appreciate the quick response.  Alas, HAL isn't running on
> >
> > the CentOS
> >
> > > 3 systems (but is on our CentOS 4 and 5 systems).  Any other ideas?
> >
> > Uh ok sorry. Do you have lvm on your system? It is possible that your CD
> > drive is in the lvm cache file. Search /etc/lvm/.cache file for CD. I
> > have sometimes seen that this problem goes away by removing the CD from
> > the lvm cache.
> > Now, I think this could have crept it in if you did a CD install.
> >
> > -Shyam
> >
> >>No LVM either.
> >>
> >>These boxes were set up four years ago, and syill run most excellently,
>
> except
>
> >>for this issue which only recently appeared.  I'm not sure how to
> >>troubleshoot it - what might possibly be cauing it, what tools I might
>
> use,
>
> >>etc.
>
> I wonder if this problem is related to mine in some unfathomable way?
>
> I started to get these errors on what turned out to be two R200s under
> Centos 5 (I previously posted a message about it only happening on one, but
> it was both) a few weeks back.
>
> As it turns out, when the message appears, it freezes the kernel for a bit.
>
> Disabling HALD (which I'm told is not useful on a server?) stopped the
> messages from appearing in the logs, but it is unclear if the kernel is
> still freezing or not or if the problem has gone away.
>
> Anyway, two knowledgeable friends tell me the problem is kernel related
> (and one has a bunch of R200s also exhibiting the same issue under Centos
> 4[I think]).
>
> However, given that you are on CoS3, I can't imagine how it would be
> related to my problem as you won't be running a recent kernel - or are you?
>
> Anyway, the easiest way to stop the problem is, I guess, either to stick a
> cd in the drive so that it can read something, or to disable the CD-ROM
> drive in the BIOS. Not ideal solutions I suppose, but they would work.
>
> Faris.
>

Faris,

Well, the kernel is the most recent 2.4 version that appears in RHEL 3 and, 
hence, CENTOS 3.  I'd hate to think that I might have to do one of the two 
work-arounds, but if I can't come up with another solution ... .

Dimitri

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